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8106891 = 313207869
BaseRepresentation
bin11110111011001110001011
3120020212120020
4132323032023
54033410031
6445431523
7125623152
oct36731613
916225506
108106891
114637911
12286b5a3
1318aaca0
141110599
15aa2096
hex7bb38b

8106891 has 8 divisors (see below), whose sum is σ = 11640720. Its totient is φ = 4988832.

The previous prime is 8106877. The next prime is 8106893. The reversal of 8106891 is 1986018.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8106891 - 29 = 8106379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8106893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103896 + ... + 103973.

It is an arithmetic number, because the mean of its divisors is an integer number (1455090).

Almost surely, 28106891 is an apocalyptic number.

8106891 is a deficient number, since it is larger than the sum of its proper divisors (3533829).

8106891 is a wasteful number, since it uses less digits than its factorization.

8106891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207885.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 8106891 is about 2847.2602620765. The cubic root of 8106891 is about 200.8868202704.

The spelling of 8106891 in words is "eight million, one hundred six thousand, eight hundred ninety-one".

Divisors: 1 3 13 39 207869 623607 2702297 8106891